MLB Umpire Factors & Stats as home plate umpire

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Rates & Averages

Boost Stats

Umpire

Today

Games

K %

BB %

RPG

BA

OBP

SLG

K Boost

BB Boost

R Boost

BA Boost

OBP Boost

SLG Boost

Rates & Averages

Boost Stats

Umpire

Today

Games

K %

BB %

RPG

BA

OBP

SLG

K Boost

BB Boost

R Boost

BA Boost

OBP Boost

SLG Boost

Joe West

PIT @ MIN

355

19.6%

8.6%

9.05

0.257

0.326

0.413

0.93x

1.05x

1.01x

1.01x

1.02x

0.99x

Jeff Nelson

NYM @ BAL

345

20.0%

7.9%

8.65

0.254

0.319

0.406

1.11x

0.89x

0.94x

0.97x

0.96x

0.97x

Marvin Hudson

TOR @ KC

336

19.8%

8.5%

8.92

0.260

0.327

0.407

0.94x

1.04x

1.00x

1.02x

1.02x

0.98x

Gerry Davis

ARI @ TEX

334

19.5%

8.5%

8.68

0.252

0.320

0.406

0.92x

1.04x

0.97x

0.99x

1.00x

0.97x

Phil Cuzzi

MIL @ CHC

331

21.1%

7.8%

8.38

0.248

0.312

0.395

1.13x

0.96x

0.98x

0.97x

0.97x

0.99x

Fieldin Culbreth

COL @ HOU

324

19.2%

8.5%

8.35

0.253

0.322

0.402

1.07x

0.95x

0.91x

0.97x

0.97x

0.96x

Paul Nauert

MIA @ ATL

317

19.6%

8.0%

8.54

0.256

0.320

0.406

1.11x

0.92x

0.92x

0.97x

0.96x

0.98x

Hunter Wendelstedt

CWS @ DET

301

20.8%

8.3%

8.39

0.249

0.317

0.394

1.04x

1.05x

1.01x

0.98x

1.00x

0.99x

Sam Holbrook

LAA @ SD

301

18.9%

8.7%

9.06

0.257

0.327

0.417

1.08x

1.00x

0.98x

0.97x

0.98x

1.00x

John Tumpane

CLE @ CIN

180

20.2%

8.5%

8.80

0.252

0.321

0.401

1.08x

1.05x

1.03x

0.99x

1.00x

1.01x

Hal Gibson III

WSH @ STL

150

22.1%

8.0%

8.49

0.247

0.314

0.398

1.11x

1.01x

1.02x

0.98x

0.99x

1.01x

Will Little

BOS @ PHI

147

21.4%

8.1%

8.11

0.246

0.312

0.393

1.08x

1.02x

0.98x

0.97x

0.98x

0.99x

Nic Lentz

TB @ NYY

77

21.0%

8.5%

8.70

0.256

0.326

0.414

0.95x

0.99x

0.98x

1.03x

1.02x

1.01x

Bill Miller

-

352

20.9%

7.3%

8.44

0.253

0.313

0.402

1.19x

0.84x

0.91x

0.96x

0.94x

0.97x

Ted Barrett

-

346

20.0%

7.9%

8.74

0.258

0.321

0.408

0.92x

0.92x

0.94x

1.01x

0.99x

0.96x

Angel Hernandez

-

341

19.8%

7.8%

8.48

0.253

0.316

0.402

1.10x

0.88x

0.92x

0.96x

0.95x

0.96x

Jerry Meals

-

340

19.9%

8.2%

8.95

0.253

0.320

0.407

1.07x

1.01x

1.04x

0.99x

1.00x

1.02x

Gary Cederstrom

-

336

19.9%

8.2%

8.49

0.254

0.322

0.402

1.00x

1.04x

1.02x

1.00x

1.01x

1.01x

Laz Diaz

-

335

19.7%

8.0%

8.82

0.256

0.320

0.407

0.97x

1.05x

1.09x

1.02x

1.02x

1.05x

Chris Guccione

-

334

19.7%

8.1%

8.84

0.258

0.323

0.411

1.12x

0.93x

0.95x

0.98x

0.97x

0.99x

Tim Timmons

-

334

20.0%

8.2%

9.26

0.261

0.327

0.421

0.98x

1.08x

1.14x

1.04x

1.04x

1.09x

Jim Reynolds

-

330

19.8%

8.3%

8.79

0.258

0.325

0.409

1.12x

0.95x

0.95x

0.98x

0.98x

0.98x

Doug Eddings

-

330

20.4%

7.1%

8.17

0.253

0.312

0.399

0.94x

0.83x

0.88x

1.00x

0.96x

0.94x

James Hoye

-

328

19.7%

8.6%

8.79

0.256

0.325

0.403

1.05x

1.06x

1.02x

1.00x

1.01x

1.01x

Lance Barksdale

-

327

19.4%

8.7%

8.54

0.254

0.324

0.404

1.11x

1.00x

0.92x

0.96x

0.97x

0.97x

Tom Hallion

-

327

19.6%

8.3%

8.94

0.257

0.323

0.411

0.88x

0.98x

1.01x

1.04x

1.02x

1.00x

Jeff Kellogg

-

324

19.1%

8.3%

8.75

0.257

0.324

0.418

1.02x

1.02x

1.02x

1.01x

1.01x

1.05x

CB Bucknor

-

324

19.8%

7.9%

8.59

0.256

0.320

0.406

1.10x

0.89x

0.93x

0.98x

0.96x

0.97x

Ron Kulpa

-

324

20.5%

8.0%

8.42

0.250

0.316

0.398

1.03x

1.01x

1.01x

0.99x

1.00x

1.01x

Larry Vanover

-

324

19.9%

8.5%

8.73

0.257

0.325

0.406

1.07x

1.04x

1.02x

1.01x

1.01x

1.02x

Greg Gibson

-

324

19.3%

8.6%

8.71

0.255

0.324

0.406

0.97x

1.08x

1.05x

1.01x

1.02x

1.03x

Eric Cooper

-

323

20.3%

7.7%

8.81

0.257

0.319

0.407

1.00x

1.01x

1.08x

1.02x

1.02x

1.05x

Bill Welke

-

323

19.4%

8.3%

9.16

0.262

0.328

0.415

1.10x

0.95x

0.99x

0.99x

0.98x

1.00x

Mike Everitt

-

323

20.2%

8.0%

8.80

0.256

0.321

0.410

1.12x

0.90x

0.95x

0.98x

0.97x

0.98x

Mike Winters

-

323

20.3%

8.3%

8.62

0.256

0.322

0.404

1.00x

1.09x

1.06x

1.02x

1.03x

1.05x

Adrian Johnson

-

321

19.9%

8.6%

9.31

0.260

0.329

0.417

1.00x

1.09x

1.12x

1.03x

1.04x

1.05x

Rob Drake

-

320

20.0%

8.3%

8.83

0.254

0.321

0.406

1.01x

1.05x

1.06x

1.00x

1.01x

1.03x

Andy Fletcher

-

318

19.5%

8.7%

8.82

0.257

0.327

0.404

0.96x

1.14x

1.09x

1.02x

1.04x

1.05x

Dan Iassogna

-

318

20.7%

8.3%

8.47

0.249

0.317

0.394

1.15x

0.93x

0.92x

0.95x

0.95x

0.94x

Mark Wegner

-

312

19.4%

8.7%

9.30

0.258

0.328

0.411

0.89x

1.02x

1.00x

1.01x

1.01x

0.97x

Jim Wolf

-

311

19.5%

8.1%

9.12

0.261

0.326

0.412

1.11x

0.92x

0.98x

0.99x

0.98x

0.99x

Paul Emmel

-

309

19.5%

8.2%

8.79

0.257

0.323

0.407

0.92x

1.00x

0.98x

1.01x

1.01x

0.98x

Mark Carlson

-

308

19.7%

8.5%

8.72

0.255

0.323

0.404

0.93x

1.04x

0.98x

1.00x

1.00x

0.97x

Chad Fairchild

-

307

19.6%

8.5%

8.91

0.257

0.327

0.411

1.09x

0.96x

0.97x

0.98x

0.98x

0.98x

Brian O'Nora

-

307

20.0%

7.8%

8.44

0.252

0.316

0.400

0.92x

0.91x

0.91x

0.99x

0.97x

0.94x

Scott Barry

-

305

19.6%

8.3%

8.95

0.257

0.324

0.409

1.09x

0.94x

0.97x

0.98x

0.97x

0.98x

Brian Knight

-

303

19.7%

8.7%

9.22

0.257

0.328

0.420

0.89x

1.03x

1.04x

1.04x

1.03x

1.02x

Marty Foster

-

301

20.1%

8.0%

8.58

0.251

0.317

0.407

1.08x

0.99x

1.00x

0.98x

0.99x

1.02x

Alfonso Marquez

-

300

18.8%

8.8%

8.77

0.254

0.326

0.402

0.89x

1.08x

0.98x

1.00x

1.01x

0.96x

Todd Tichenor

-

297

19.8%

8.5%

8.79

0.257

0.325

0.405

0.91x

1.00x

0.95x

1.01x

1.00x

0.95x

Dana DeMuth

-

289

19.5%

8.3%

8.93

0.255

0.323

0.404

1.08x

0.93x

0.97x

0.97x

0.97x

0.97x

Bob Davidson

-

288

19.4%

8.0%

8.74

0.258

0.324

0.403

0.97x

1.01x

1.05x

1.02x

1.02x

1.02x

Jerry Layne

-

287

19.0%

8.6%

8.65

0.256

0.325

0.407

1.08x

0.98x

0.93x

0.97x

0.98x

0.98x

Tony Randazzo

-

287

20.3%

7.7%

8.78

0.259

0.321

0.415

0.96x

0.94x

0.98x

1.02x

1.00x

1.00x

Brian Gorman

-

286

20.1%

7.8%

8.67

0.259

0.321

0.406

0.95x

0.96x

0.97x

1.01x

1.00x

0.97x

Mike Estabrook

-

281

20.4%

7.8%

8.44

0.250

0.314

0.401

1.10x

0.96x

0.98x

0.98x

0.98x

1.00x

Dale Scott

-

274

19.0%

8.8%

8.84

0.260

0.330

0.409

1.08x

1.00x

0.95x

0.99x

0.99x

0.98x

Kerwin Danley

-

273

19.8%

8.2%

8.34

0.253

0.320

0.398

1.13x

0.94x

0.90x

0.96x

0.96x

0.96x

Ed Hickox

-

264

19.8%

8.2%

8.68

0.251

0.318

0.398

0.97x

1.07x

1.07x

1.00x

1.01x

1.03x

Dan Bellino

-

262

20.8%

8.0%

8.43

0.252

0.318

0.400

0.96x

0.94x

0.91x

0.99x

0.98x

0.94x

Vic Carapazza

-

257

21.2%

7.8%

7.90

0.247

0.312

0.391

1.06x

0.99x

0.95x

0.98x

0.98x

0.99x

Alan Porter

-

251

20.1%

8.2%

8.89

0.257

0.323

0.412

0.93x

0.96x

0.96x

1.01x

1.00x

0.97x

Mike DiMuro

-

247

18.8%

8.4%

8.68

0.255

0.322

0.400

1.01x

1.04x

1.01x

1.00x

1.01x

1.00x

Mike Muchlinski

-

246

20.3%

7.8%

8.73

0.256

0.319

0.415

0.96x

0.95x

0.98x

1.00x

0.99x

1.00x

Tim Welke

-

242

19.7%

7.7%

8.85

0.256

0.318

0.406

1.10x

0.87x

0.96x

0.97x

0.96x

0.97x

Jim Joyce

-

237

19.3%

8.4%

8.92

0.254

0.322

0.404

0.95x

1.10x

1.10x

1.01x

1.03x

1.05x

D.J. Reyburn

-

232

20.7%

8.1%

8.60

0.252

0.318

0.403

1.18x

0.93x

0.93x

0.96x

0.96x

0.97x

Cory Blaser

-

225

20.6%

7.8%

8.00

0.249

0.312

0.394

1.10x

0.96x

0.93x

0.98x

0.97x

0.99x

Paul Schrieber

-

219

18.0%

9.0%

9.18

0.260

0.331

0.413

1.00x

1.01x

1.00x

0.99x

0.99x

0.99x

Chris Conroy

-

219

20.3%

8.0%

8.86

0.259

0.324

0.413

1.10x

0.95x

1.01x

1.01x

1.00x

1.03x

Bruce Dreckman

-

217

19.2%

8.5%

8.74

0.255

0.325

0.404

1.09x

0.98x

0.94x

0.97x

0.98x

0.97x

Manny Gonzalez

-

208

19.7%

8.1%

9.38

0.264

0.329

0.423

1.06x

1.00x

1.09x

1.04x

1.03x

1.06x

Wally Bell

-

195

19.4%

7.9%

8.66

0.257

0.321

0.413

1.04x

0.97x

1.01x

1.01x

1.00x

1.03x

Jordan Baker

-

195

20.4%

8.3%

8.50

0.254

0.322

0.408

1.00x

1.09x

1.05x

1.01x

1.03x

1.06x

Tim McClelland

-

192

17.6%

9.5%

9.86

0.265

0.339

0.417

1.00x

1.09x

1.06x

1.00x

1.02x

1.00x

Lance Barrett

-

186

21.0%

7.9%

8.72

0.254

0.318

0.401

1.13x

0.97x

1.02x

0.99x

0.99x

1.00x

Gary Darling

-

183

19.5%

7.9%

8.73

0.260

0.323

0.408

1.05x

0.97x

1.02x

1.02x

1.01x

1.02x

John Hirschbeck

-

172

20.1%

8.1%

8.42

0.255

0.320

0.399

1.08x

0.99x

0.98x

1.00x

1.00x

1.00x

David Rackley

-

166

20.3%

8.3%

8.92

0.260

0.327

0.419

1.00x

1.09x

1.10x

1.04x

1.04x

1.08x

Adam Hamari

-

161

21.7%

7.3%

8.43

0.245

0.306

0.400

1.09x

0.92x

1.01x

0.97x

0.96x

1.01x

Derryl Cousins

-

157

17.7%

9.2%

8.79

0.252

0.326

0.403

0.95x

1.13x

1.02x

0.99x

1.02x

1.01x

Mark Ripperger

-

157

21.7%

7.3%

8.44

0.253

0.313

0.410

1.09x

0.91x

1.02x

1.00x

0.99x

1.03x

Quinn Wolcott

-

153

20.9%

8.1%

8.93

0.259

0.325

0.408

0.95x

0.96x

1.01x

1.04x

1.02x

1.00x

Gabe Morales

-

147

21.7%

7.8%

9.18

0.256

0.319

0.412

0.98x

0.91x

1.03x

1.03x

1.00x

1.01x

Ed Rapuano

-

142

17.5%

8.6%

9.32

0.267

0.333

0.425

0.97x

0.96x

1.01x

1.02x

1.00x

1.02x

Pat Hoberg

-

141

21.1%

8.9%

8.90

0.253

0.324

0.413

0.99x

1.08x

1.00x

0.99x

1.01x

0.99x

Tim Tschida

-

135

17.7%

9.4%

9.59

0.268

0.341

0.423

0.99x

1.05x

1.04x

1.02x

1.02x

1.01x

Brian Runge

-

129

19.3%

7.7%

8.72

0.255

0.316

0.409

1.10x

0.88x

0.94x

0.97x

0.95x

0.98x

Clint Fagan

-

128

20.2%

8.7%

9.16

0.252

0.322

0.412

1.02x

1.10x

1.10x

1.00x

1.02x

1.04x

Chris Segal

-

114

20.8%

7.4%

8.82

0.255

0.316

0.404

1.02x

0.97x

1.08x

1.02x

1.01x

1.05x

Angel Campos

-

114

19.0%

8.6%

9.46

0.265

0.333

0.414

1.06x

0.96x

1.03x

1.01x

1.00x

0.99x

Ryan Blakney

-

110

22.2%

7.5%

8.57

0.249

0.312

0.401

1.02x

0.88x

0.92x

0.98x

0.96x

0.94x

Carlos Torres

-

92

21.5%

8.6%

9.02

0.252

0.322

0.419

1.05x

1.12x

1.06x

0.99x

1.02x

1.04x

Tom Woodring

-

90

20.7%

8.5%

9.29

0.259

0.326

0.435

1.02x

1.12x

1.14x

1.03x

1.04x

1.13x

Ben May

-

88

22.0%

8.0%

8.50

0.244

0.310

0.402

1.01x

0.93x

0.92x

0.96x

0.96x

0.95x

Mike Reilly

-

87

18.5%

9.3%

9.71

0.272

0.344

0.431

1.03x

1.04x

1.05x

1.04x

1.03x

1.03x

Sean Barber

-

85

20.7%

8.3%

9.12

0.252

0.321

0.417

0.98x

1.02x

1.02x

0.99x

1.00x

1.00x

Toby Basner

-

81

21.4%

8.2%

8.88

0.246

0.315

0.390

1.05x

1.07x

1.09x

0.98x

1.00x

1.01x

Stu Scheurwater

-

79

20.9%

8.5%

8.78

0.250

0.319

0.416

1.03x

1.11x

1.08x

1.00x

1.02x

1.08x

Bill Hohn

-

76

16.7%

8.8%

8.03

0.251

0.321

0.401

0.93x

0.98x

0.87x

0.96x

0.96x

0.96x

Chad Whitson

-

67

22.4%

8.7%

8.73

0.242

0.312

0.408

1.06x

1.06x

0.98x

0.95x

0.97x

0.98x

Jerry Crawford

-

64

17.3%

10.5%

10.16

0.268

0.349

0.434

0.98x

1.20x

1.09x

1.02x

1.05x

1.04x

Chuck Meriwether

-

62

17.9%

8.6%

9.63

0.265

0.331

0.414

1.00x

0.96x

1.04x

1.01x

0.99x

0.99x

Ramon De Jesus

-

52

21.4%

8.3%

9.60

0.261

0.328

0.417

0.97x

0.97x

1.08x

1.05x

1.03x

1.02x

Charlie Reliford

-

46

18.2%

8.4%

9.24

0.255

0.322

0.402

1.04x

0.97x

0.99x

0.97x

0.97x

0.97x

Randy Marsh

-

46

15.3%

9.5%

10.57

0.279

0.352

0.441

0.85x

1.07x

1.15x

1.06x

1.06x

1.06x

Ed Montague

-

29

18.0%

8.9%

8.38

0.254

0.325

0.400

1.03x

1.02x

0.90x

0.96x

0.97x

0.96x

Roberto Ortiz

-

26

24.0%

8.1%

9.12

0.261

0.325

0.442

1.13x

0.99x

1.02x

1.02x

1.01x

1.06x

Ryan Additon

-

21

21.2%

8.9%

9.67

0.261

0.333

0.430

0.98x

1.04x

1.04x

1.03x

1.03x

1.01x

Marcus Pattillo

-

19

23.0%

7.4%

7.68

0.237

0.299

0.371

1.13x

0.97x

0.95x

0.94x

0.96x

0.96x

Rick Reed

-

18

18.4%

9.9%

9.22

0.250

0.327

0.419

1.05x

1.13x

0.99x

0.95x

0.98x

1.01x

Shane Livensparger

-

17

21.0%

8.1%

7.41

0.227

0.298

0.353

0.95x

0.96x

0.83x

0.92x

0.93x

0.86x

Jansen Visconti

-

17

22.0%

8.0%

10.53

0.266

0.333

0.424

0.99x

0.94x

1.19x

1.07x

1.05x

1.04x

Seth Buckminster

-

16

21.9%

9.5%

7.38

0.241

0.323

0.366

1.07x

1.25x

0.91x

0.96x

1.03x

0.95x

Nick Mahrley

-

16

25.6%

8.1%

8.44

0.263

0.332

0.418

1.18x

0.95x

0.91x

1.03x

1.02x

0.98x

Jeremie Rehak

-

13

23.1%

7.8%

7.15

0.237

0.300

0.383

1.05x

0.92x

0.81x

0.96x

0.94x

0.93x

Kevin Causey

-

12

14.9%

9.0%

8.92

0.269

0.340

0.437

0.85x

1.04x

0.96x

1.02x

1.02x

1.05x

Chris Tiller

-

9

15.3%

9.6%

7.33

0.243

0.322

0.379

0.83x

1.13x

0.84x

0.94x

0.99x

0.94x

Damien Beal

-

9

17.5%

9.9%

8.00

0.256

0.334

0.445

0.99x

1.14x

0.86x

0.97x

1.00x

1.07x

Delfin Colon

-

8

16.9%

7.3%

11.25

0.281

0.338

0.492

0.96x

0.84x

1.21x

1.07x

1.02x

1.18x

John Libka

-

7

20.5%

7.5%

7.57

0.265

0.330

0.405

0.93x

0.89x

0.85x

1.07x

1.03x

0.99x

Casey Moser

-

5

16.1%

8.2%

6.20

0.226

0.290

0.349

0.92x

0.94x

0.67x

0.86x

0.87x

0.84x

Jon Byrne

-

3

15.5%

7.3%

7.67

0.237

0.293

0.366

0.76x

0.95x

0.94x

0.94x

0.93x

0.95x

Mark Lollo

-

2

19.9%

11.5%

7.50

0.231

0.325

0.373

1.07x

1.42x

0.87x

0.91x

1.01x

0.93x

Jeff Gosney

-

2

12.7%

8.9%

8.50

0.273

0.338

0.406

0.62x

1.16x

1.05x

1.09x

1.08x

1.05x

Shawn Rakos

-

2

25.4%

12.1%

5.50

0.210

0.306

0.284

1.45x

1.39x

0.59x

0.79x

0.92x

0.68x

A.J. Johnson

-

1

28.6%

15.6%

6.00

0.219

0.342

0.422

1.40x

2.03x

0.71x

0.86x

1.08x

1.04x

All stats date back to 2008 Season

MLB Umpire Factors

MLB Umpire Factors

Umpire Factors represent how much effect an umpire has on various hitter and pitcher statistics for games in which they were the home plate umpire.

Boost Stats: These metrics represent how batting statistics are effected when an umpire is behind home plate. For example: If an umpire's K Boost = 1.45x, it means that for games in which he is the home plate umpire, there are 45% more strikeouts than the average.

Stats Glossary:

K % = Strike Out Rate

BB % = Walk Rate

RPG = Runs Per Game

BA = Batting Average

OBP = On Base Percentage (H + BB + HBP)/(At Bats + BB + HBP + SF)

SLG = Slugging Percentage (Total Bases/At Bats)

K Boost = Strike Out Boost

BB Boost= Walk Boost

R Boost= Run Boost

BA Boost= Batting Average Boost

OBP Boost= On Base Percentage Boost

SLG Boost= Slugging Percentage Boost

All stats date back to 2008 Season Coming Soon: We will be releasing more accurate versions of these stats that account for biases, such as an umpire calling more games with better pitchers (who throw more strikeouts), etc.